Home / 641,850.27-885,752.98-355,388.50

Finding the Fourth Proportional to 641,850.27, 885,752.98 and 355,388.50

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Solution

The fourth proportional to 641,850.27, 885,752.98 and 355,388.50 is: 490,435.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,850.27 : 885,752.98 = 355,388.50 : x
  2. Step 2: Convert to fraction form
    641,850.27/885,752.98 = 355,388.50/x
  3. Step 3: Cross multiply
    641,850.27x = 885,752.98 × 355,388.50
  4. Step 4: Simplify right side
    641,850.27x = 314,786,422,932.73
  5. Step 5: Solve for x
    x = 314,786,422,932.73/641,850.27
  6. Step 6: Final answer
    x = 490,435.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.